Wednesday, December 21, 2011

The Voyager Golden Record: Images of Earth as Seen by Extraterrestrials

Last week's post on what the Earth looks like during an eclipse garnered a lot of Ooohs and Aaahs in the comments because of the unusual view it provided of the Earth. But what kind of view would extraterrestrials find of this planet? Fortunately for them, they won't have to travel too far to find pictures of Earth and her inhabitants as they can just look at the images preserved on the Voyager Golden Record.

The Voyager Golden Record is the famous vinyl record that was sent out to space a few decades ago in the hopes of it encountering an alien civilization along its voyage. It is notable for its collection of pictures and sounds that were meticulously selected to represent the Earth and its inhabitants as of its creation. In essence, the recording is the sum total of humanity and their home.

The NASA committee in-charge of selecting the record's contents was chaired by Carl Sagan and included images that they believed were descriptive of this planet. They include pictures of the planets along with illustrations of the human anatomy and the structure of the DNA. They also included some eclectic choices that provide an interesting look at the day-to-day life of humans.

Photographs included in the vinyl include the heights of humanity's technological advances such as an X-ray of a hand to man's physical prowess like the multiple exposure image of a gymnast on a balance beam to more artistic views of the planet such as Ansel Adams' 1942 black-and-white photograph of the Tetons and the Snake River. However, they also included more mundane activities like a simultaneous demonstration of people licking, eating and drinking, and even an image of someone shopping in a supermarket.

Why would Carl Sagan's committee choose such commonplace events such as the two mentioned above?. Maybe after such a display of technological and artistic prowess, they didn't want to scare away the aliens? Or maybe they realized that it's the little things that make humanity what it is today? Whatever the reason behind their selection, the 100 or so images provide viewers with an opportunity to reflect about themselves and maybe help people realize that eating grapes in a grocery store is just as human as performing a space walk in an astronaut' suit.